nagios service check example nagios service check example

This yields less output to dig through. When Nagios needs to run a scheduled service check, it will initiate the service check and then return to doing other work (running host checks, etc). While Nagios can monitor multiple OSes, the server must reside on a Linux or Unix variant such as FreeBSD or Solaris. How to tell which packages are held back due to phased updates. They are a web interface and command line tool set to work with Nagios config that have decent default templates and "example" files that you can leverage for common checks. I Have problem with the check_http when I try ur command test , I have the next message : Check whether a document is older than x seconds. # Sample object config file for Nagios : 3 # 4 # Read the documentation for more information on this configuration file. See Also: Active Checks, Service Checks, Host Checks. Nagios Core and Nagios XI has a features to monitoring website URL status. The first thing that needs to be done in order to use passive checks for your Nagios setup is to make sure that you have the following options in your main Nagios configuration file: It would also be good to enable the logging of incoming passive checksthis makes determining the problem of not processing a passive check much easier. The plugin returns a CRITICAL state if the service is not started. Even if its parent host is currently DOWN, the child host state is also stored as DOWN. Nagios also offers another way to work with the statuses of hosts and services. The scripts stored in /etc/nagios-plugins/config/ can shed some light on the awesome capabilities of Nagios. Use Puppet environments. To check whether a specific webpage is available, use the -u option as shown below. This will give an idea on whether the execution will be successful and what the output of the script will look like. How to handle a hobby that makes income in US. When services change state too frequently they are considered to be "flapping". The following is an example of the required configuration for a host that accepts passive checks and has active checks disabled: Configuring services is exactly the same as with hosts. define service{ use generic-service host_name web1.onemetric.com.au service_description Uptime check_command snmp_Uptime!-C public } Adjust the commands as required. However, applications on remote hosts can't do this so easily. See Also: Active Checks, Host Checks, Check Scheduling, Predictive Dependency Checks. Services are checked by the Nagios daemon: At regular intervals, as defined by the check_interval and retry_interval options in your service definitions. In cases where the checks require the deployment of long-running processes or monitoring information constantly, this should be done as a passive service. check_http: command not found. For example, if you are bringing down your HTTP server everyday sometime between midnight and 1:59 a.m, you can specify the above "247-except-night-12-2" timeperiod in your service definition for the check_period and notification_period as shown below for your particular service definition. When Nagios checks the status of services, it will be able to detect when a service changes between OK, WARNING, UNKNOWN, and CRITICAL states and take appropriate action. Allow Nagios server to run commands on the client by adding it to the allowed_hosts entry in /etc/nagios/nrpe.cfg. The following file can be modified to do the job. Get your subscription here. A user nagios is created for both localhost and for any host. Services are those which are used by Nagios to check something about a host. This defines that check_nrpe is the command and check_root_home_du is the value of $ARG1$. For HTTPS running on a different port, do the following. The -S option is not working with 2.0 plugins. A user [emailprotected] is created in MySQL server. Having managed large Nagios installations for many years, assigning services to hostgroups is an anti pattern and can make things complicated fast if your environment gets big. 2. How to use it? Would you please be so kind as to help me? Nagios will be configured to monitor SMTP and mail queue of the server. To identify the status of a monitored service, Nagios runs a check plugin on it. Service - Started Check to see if a service is started. You can check tomcat server, or apache server, or glassfish, or any server that is running on a different port by speficying the port number as shown below. Just cd (or not) into the plugins directory (this directory location varies, depending on how you've installed it, but check /usr/local/nagios, or /usr/lib/nagios). As with submitting host check results, it is worth mentioning that Nagios will take some time to process passive check results as they are polled periodically from the external commands pipe. Yup, just like any other linux flag, the "-" with whatever flags you use will load the flag. This plugin uses systemctl is-active command, please check you have systemd. >Mainly Focus on Kafka and Cloudera services, Cluster . VS Code extension | 35 comentarios en LinkedIn # Nagios Exit Codes OK=0 WARNING=1 CRITICAL=2 UNKNOWN=3 # Weather or not we can trust the exit code from the service management tool. When defining and testing new services in nagios I have been restarting nagios, then clicking the service, and rescheduling a check for as soon as possible, then waiting until the check happens. When everything goes smoothly, we should be able to see our new Nagios client on the Nagios website with its new service OS: unread mail for root, as well as the status green OK. This usually calls for some effort. rev2023.3.3.43278. What can a lawyer do if the client wants him to be acquitted of everything despite serious evidence? Browse other questions tagged, Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site. -c 7 -w 5 -v. Any pointer if I am missing anything but obvious. This mechanism includes password protection, along with encryption, to prevent injection of false results in to Nagios. Affordable solution to train a team and make them project ready. NSCA stands for Nagios Service Check Acceptor. The check logic inside Nagios process starts the Active check. Also, depending on your configuration you should add this last file to the main file (/usr/local/nagios/etc/nagios.cfg): Check the configuration and, if no errors or warnings, reload the service: And now you have a new custom check on a host: Nagios has a huge library of plugins available at Nagios Exchange. Nagios check service frequency based on service status, how can execute nagios commands from command line in linux. It allows the implementation of plugins, developed by the community, or even allows us to configure our own monitoring scripts. If you preorder a special airline meal (e.g. Also, MySQL would not let just any host to connect to it. Can I tell police to wait and call a lawyer when served with a search warrant? Let us assume that the following custom application is also running in the network, listening on a particular port. How to install and configure nagios on centos 7 step by step ile ilikili ileri arayn ya da 22 milyondan fazla i ieriiyle dnyann en byk serbest alma pazarnda ie alm yapn. service_description check http://MYIP/test.php Note that there are possible security implications of this change, so it's worth mentioning a few words: The following tuning should do the trick. The host or the services will be tested again and again till the time the status is permanent. I test the command from command line successfull, but when I insert in configuration file (cfg) it gives Error: Service check command check_http -H MYIP -u http://MYIP/test.php specified in service HTTP for host Server01 not defined anywhere! Rather, Nagios takes the passive check result to be the actual state the host is in and doesn't try to determine the host's actual state using the reachability logic. In other cases, passive checks are the way to go. Monitoring Website URL Status Nagios allows applications and event handlers to send out passive check results for host objects. When it is an active check result, Nagios takes the fact that switch1 is down into account and maps the child nodes result into an UNREACHABLE state. Contribute to vishalsingh17/GitiPedia development by creating an account on GitHub. does the HTML display xx welcome xx? If you want Nagios to treat all passive check results for hosts as if they were soft results, you need to enable the following option in the main Nagios configuration file: Passive service checks are very similar to passive host checks. 2. Each of these options opens the Manage Service Template screen.The New option will have no pre-selected directive values, Copy lets you create a new template based on an existing templates properties, and Modify enables the editing of an . The NSCA addon consists of a daemon that runs on the Nagios hosts and a client that is executed from remote hosts. Nonetheless, they can be tuned to match the requirements. It shows what is performed by Nagios in both cases and what needs to be done by the check command or an external application for passive checks. Note: A service must be defined in Nagios before you can submit passive check results for it! Select check_cluster from the plugin pop-up menu. An external application checks the status of a host or service. Nagios, the Nagios logo, and Nagios graphics are the servicemarks, trademarks, or registered trademarks owned by Nagios Enterprises. Current status from nagios Web interface: Thank you article really help a beginer like me ;-). host_name Server01 The external application writes the results of the check to the. Line 1 ##### 2 # Sample object config file for Nagios : 3 # 4 # Read the documentation for more information on this configuration file. The main Nagios process then handles the check results and takes appropriate action (running event handlers, sending notifications, etc.). Please note that this article is published by Xmodulo.com under a Creative Commons Attribution-ShareAlike 3.0 Unported License. By using this website, you agree with our Cookies Policy. You need to add the full path to it in the check_command. Primary Vendor -- Product Description Published CVSS Score Source & Patch Info; akamai -- cloudtest: Akamai CloudTest before 58.30 allows remote code execution. check_http -H hostname (or) -I ip-address {optional options}. Nagios, the Nagios logo, and Nagios graphics are the servicemarks, trademarks, or registered trademarks owned by Nagios Enterprises. The default FQDN used for testing is www.google.com, but it can be changed as needed. In this tutorial, we'll install Nagios on an Ubuntu 19.10 server, but these steps should work on any Debian-based distro. If you want know more, just read and play with: I'm new to shell and would like to understand and adapt your script would you comment on why this particular adaptation wont work (results unknown - 0 regardless of input parameter sent by the user), countWarnings=$(/usr/local/nagios/bin/nagiostats | grep "Ok/Warn/Unk/Crit:" | sed 's/[[:space:]]//g' | cut -d"/" -f5), echo "example: plugin.sh minimal_counter_for_warning_alert counter_for_critical_alert", if (($warn<=$countWarnings ||$countWarnings==0)); then, echo "OK - $countWarnings services in Warning state", elif (($warn<$countWarnings && $countWarnings<=$crit)); then, echo "WARNING - $countWarnings services in Warning state", echo "CRITICAL - $countWarnings services in Warning state", [emailprotected]:/usr/local/nagios/libexec$ echo $(/usr/local/nagios/bin/nagiostats | grep "Ok/Warn/Unk/Crit:" | sed 's/[[:space:]]//g' | cut -d"/" -f5). But if you just want to check if the instance is up and running (and not add more complexity), you can use the simple script provided here. We want Nagios to monitor this database, and as the application is already using it, we can add a module that reports this to Nagios. Find the plugin you want to run (if you're not sure, compare what you see in your plugins directory on your Linux box with the plugins located here: http://exchange.nagios.org/directory/Plugins, or try running "./plugin-name -h" to get the help info about the plugin). Force a check and you will see exactly how the command is being run. Set enable_notifications=0 in nagios.cfg. How to Install Nagios? To learn more, see our tips on writing great answers. Enter file in which to save the key (/home/nagios/.ssh/id_dsa): Enter passphrase (empty for. This feature is only available to subscribers. This requires trying to read the entire disk directly from the block device (such as /dev/sda1) and checking if the attempt has failed. On the next screen: Enter a unique name in the Command Name field (suggest one is check_host_cluster and the other check_service_cluster) Append --host to the Command Line section for host . 03-16-2010, 10:31 AM . Now we know that the custom plugin is working on the client and on the server, and that the NRPE is communicating correctly, we can go ahead and configure Nagios files for checking the remote device. This is where the location of Nagios log file, status.dat file, lock file and host and services state update interval is defined. By default, Nagios handles results from active and passive checks differently. Active checks are most common in the Nagios world. Do roots of these polynomials approach the negative of the Euler-Mascheroni constant? But today when I am trying to post an XML message to the server, from console it works well but does not work with nrpe. When a host is reported to be DOWN as a passive check result, Nagios does not perform a translation from DOWN to UNREACHABLE. check_http plugin is used to verify the status of HTTP server (or HTTPS) that is running on a remote host. Complete a blank sample electronically to ##### ##### # # SAMPLE SERVICE CHECK COMMANDS # # These are some example . Affordable solution to train a team and make them project ready. Passive checks are initiated and performed by external applications/processes, Passive check results are submitted to Nagios for processing, Asynchronous in nature and cannot be monitored effectively by polling their status on a regularly scheduled basis, Located behind a firewall and cannot be checked actively from the monitoring host. Learn more about Stack Overflow the company, and our products. What is check_http? The first parameter tells Nagios that it should check whether the results from the checks are up-to-date. Nagios' check_ssh (of course) keeps marking the process as critical since it can't connect on that port. Here is the output when the RemoteAccess service was started: Checking if a service is stopped using SNMP is not very straight forward, checking a process is the best solution here, please refer to the Process Checks KB article. . By using this website, you agree with our Cookies Policy. I've provided some comments here, but things may not be so # clear without further explanation. They may or may not work on: 44 # your system, as they must be modified for your plugins. NSClient++ includes a service module that can check if a service is stopped. Follow Up: struct sockaddr storage initialization by network format-string, Identify those arcade games from a 1983 Brazilian music video. Establish a terminal session to your Nagios XI server and execute the following command: Copy the configuration file to the Apache directory: /usr/bin/install -c -m 644 sample-config/httpd.conf /etc/apache2/sites-available/nagios.conf Install the Nagios Plugins to have a set of tools to monitor your different services: apt install build-essential libssl-dev gcc The figure shown below shows an active check . I just used that simple script as an example, any language can be used to write your own custom plugin. /usr/nagios/libexec/check_http .. For example, to set up a very similar service, all we need to do is to use the same parameters as those for the hosts: In this case, Nagios will never perform any active checks on its own and will only rely on the results that are passed to it. A good example would be a server that is a part of an application, processing job queues using a database. See the HTML : 45 Mar 01, 2023 (Heraldkeepers) -- United States, New Jersey- The most recent analysis of the DNS Monitoring Tool market by Infinity Business Insights offers a. # These are some example service check commands. Nagios check_udp_ports returning critical: result to scheduled check, runs fine manually, Nagios - check procs and --metric=elapsed on the same service. When a URL is redirected, use this to either follow the URL, or send ok, warning, or critical notification, Specify the minimum and maximum page size expected in bytes. # Defaults to 0, put to 1 for systemd. To allow it to grow bigger before rotating, add more zeroes, for example. When new information regarding a service gets passed to Nagios via the external commands pipe, Nagios treats it the same way as if it had been received by an active check. Passive checks are useful for monitoring services that are: Examples of asynchronous services that lend themselves to being monitored passively include SNMP traps and security alerts. There are no attachments for this article. Some of the scripts provided with Nagios are restricted to the local server only. 164060 Nagios HTTP/HTTPS check via wget (with/without Proxy) Check website accessibility by return code and execution time. This user is then granted all permission to all databases and will be used for monitoring. 5 check_http Command Examples 1. Stack Exchange network consists of 181 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. Far better then Nagios documentation. Installing the Nagios Remote Plugin Executor In this lab, we will install the Nagios Remote Plugin Executor on the Nagios Core Host as well as any remote hosts on which we haven't already installed it. shooting in dedham, ma today, river city basketball tournament, albert demeo obituary,